Path: Home > GB/T > Page734 > GB/T 19285-2026 || Home > Standard_List > GB/T > Page734 > GB/T 19285-2026 Price & DeliveryUS$1659.00 ยท In stock
Delivery: <= 9 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 19285-2026: Inspection of corrosion protection for buried steel pipelines
Status: Valid
GB/T 19285: Evolution and historical versions
| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| GB/T 19285-2026 | English | 1659 |
Add to Cart
|
9 days [Need to translate]
|
Inspection of corrosion protection for buried steel pipelines
| Valid |
| GB/T 19285-2014 | English | 1979 |
Add to Cart
|
13 days [Need to translate]
|
Inspection of corrosion protection for buried steel pipelines
| Valid |
| GB/T 19285-2003 | English | RFQ |
ASK
|
9 days [Need to translate]
|
Inspection of corrosion protection for buried steel pipelines
| Obsolete |
Standard similar to GB/T 19285-2026 GB/T 19326 | GB/T 13401 | GB/T 17185 | GB/T 12459 | GB/T 12385 | Basic data | Standard ID | GB/T 19285-2026 (GB/T19285-2026) | | Description (Translated English) | Inspection of corrosion protection for buried steel pipelines | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J15 | | Classification of International Standard | 23.040 | | Word Count Estimation | 82,826 | | Date of Issue | 2026-01-28 | | Date of Implementation | 2026-05-01 | | Older Standard (superseded by this standard) | GB/T 19285-2014 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 19285-2026: Inspection of corrosion protection for buried steel pipelines---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 23.040
CCSJ15
National Standards of the People's Republic of China
Replaces GB/T 19285-2014
Inspection of corrosion protection engineering for buried steel pipelines
Published on 2026-01-28
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms, Definitions, and Abbreviations 1
4.Basic Regulations 3
5.Construction period inspection 3
6.Runtime Check 11
7.Periodic inspections 13
Appendix A (Normative) Methods for Testing Soil Corrosivity 22
Appendix B (Normative) Corrosion Rate Test Method 29
Appendix C (Normative) Stray Current Interference Test Method 31
Appendix D (Normative) Test Methods for Physical Properties of External Anti-corrosion Coatings 34
Appendix E (Normative) Method for non-excavation inspection of damage points in anti-corrosion coating 40
Appendix F (Normative) Inspection Method for Overall Condition of External Anti-corrosion Coating 45
Appendix G (Normative) Test Method for Insulation Performance of Insulating Flanges (Joints) 49
Appendix H (Normative) Grounding Resistance Test Method 55
Appendix I (Normative) Test Methods for Cathodic Protection Effectiveness 57
Appendix J (Normative) Sacrificial Anode Parameter Test Method 61
Appendix K (Normative) Evaluation Method for Quality Grade of Corrosion Protection System for Buried Steel Pipelines 65
Appendix L (Informative) Example 71.Quality Grade Evaluation of Corrosion Protection Systems for Buried Steel Pipelines
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document replaces GB/T 19285-2014 "Inspection of Corrosion Protection Engineering for Buried Steel Pipelines" and is consistent with GB/T 19285-2014.
Compared to previous versions, aside from structural adjustments and editorial changes, the main technical changes are as follows.
a) The scope has been changed to "external corrosion protection for buried steel pipelines on land," applicable to "construction period inspection, operation inspection, and maintenance."
Periodic inspection (see Chapter 1, Chapter 1 of the.2014 edition);
b) The terms "electrode potential," "corrosion potential," "external anti-corrosion coating," "cathode protection," "sacrificial anode," "forced current," and "packing material" have been deleted.
"Auxiliary anode", "Test pile", "Polarization potential", "Maximum protection potential", "Minimum protection potential", "Leak point", "Damage point", "Soil surface"
"Potential gradient", "DC interference drainage protection", "AC interference protection", "pipeline AC interference voltage", "AC current density" and their settings
Meaning (see sections 3.13, 3.1.4, 3.1.7~3.1.11, 3.1.13, 3.1.14, 3.1.17~3.1.19, 3.1.24, 3.1.25 of the.2014 edition)
Articles 3.1.33 to 3.1.35, 3.1.37, and 3.1.38 have changed the terms "sacrificial anode closed-circuit potential (operating potential)" and "sacrificial anode open-circuit potential".
The name of "position" (see 3.1.13, 3.1.14, 3.1.20 and 3.1.21 in the.2014 edition) has been changed, and the terms "inspection piece" and "AC current decay" have been modified.
The English equivalent of "subtraction" (see 3.1.6, 3.1.7, 3.1.15 and 3.1.26 in the.2014 edition) has been changed, along with the terms "power-off potential" and "corrosion potential".
"Corrosion-active region", "pipe-to-soil potential", "AC potential gradient method", "AC interference", "current-carrying potential", "soil resistivity", "redox potential"
"Potential", "stray current", "DC potential gradient method", "DC interference", "natural corrosion potential", "IR drop" and their definitions (see 3.1.3~
Versions 3.1.5, 3.1.8, 3.1.9, 3.1.11, 3.1.12, 3.1.15~3.1.20, and versions 3.1.1, 3.1.2, 3.1.5, 3.1.6, and 3.1.16 of the.2014 edition.
Sections 3.1.22, 3.1.23, 3.1.28~3.1.32, and 3.1.36 added the term "Analytic Hierarchy Process" and its definition (see 3.1.2).
c) The abbreviation "3LPE" has been removed (see 3.2,.2014 edition);
d) Added basic regulations, including requirements for different stages of inspection of corrosion protection systems for buried steel pipelines, methods for dividing pipe sections, and other necessary procedures.
The circumstances under which the inspection is conducted, as well as related content such as data alignment, communication mechanisms, health, safety and environmental protection, equipment and instruments (see section [number]).
(4 chapters)
e) The inspection of external anti-corrosion coatings and cathodic protection systems during the construction period has been revised (see Chapter 5, Chapter 5 and Chapter 6 of the.2014 edition).
Chapter 6);
f) Added design specifications for pipeline joint corrosion protection layers, insulation layers, and corrosion protection and protective layers for pipe crossing sections (see...).
5.2.2);
g) The evaluation criteria for cathodic protection effectiveness have been revised (see 5.4.4, 6.1 in the.2014 version);
h) The stray current interference test methods and evaluation indicators have been changed (see 5.5 and 7.2.2, 4.3 in the.2014 edition);
i) The evaluation indicators for drainage effectiveness have been changed (see 6.5, 7.3.4 in the.2014 version);
j) The insulation performance evaluation criteria have been revised (see 7.5, 6.4.7 of the.2014 edition, and Appendix F);
k) The inspection methods and content for the pipeline body have been added (see 7.8.2);
l) The near-reference method was removed, and some parts of the testing methods for pH, water content, salinity, and Cl- content, as well as the texture discrimination method, were modified and optimized.
The operational steps are detailed in Appendix A (2014 edition).
m) A corrosion rate testing method has been added (see Appendix B);
n) Test methods for DC interference pipe ground potential, pipe AC interference voltage, and induced current have been removed (see Appendix B of the.2014 edition);
o) Increased requirements for sample preparation (see C.2.2.3);
p) The test method for the insulation performance of insulating flanges (joints) has been changed, and a test method for surge protectors has been added (see Appendix G,.2014).
Appendix F of the.2018 edition);
q) The numerical requirement for the DC 1mA voltage of the surge arrester has been added (see G.6.3.1);
r) The method for testing the current inside the tube has been removed (see Appendix G of the.2014 edition);
s) The test method for cathodic protection effectiveness has been changed (see Appendix I, Appendix J of the.2014 edition);
t) The analytic hierarchy process (AHP) and its examples in the evaluation of corrosion protection system quality levels have been modified, and the expert scoring method and its examples have been removed.
(See Annexes K and L, Annexes L and N of the.2014 edition).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Boilers and Pressure Vessels (SAC/TC262).
This document was drafted by. China Special Equipment Inspection and Research Institute, China Oil & Gas Pipeline Network Corporation, and Shanghai Special Equipment Inspection and Research Institute.
Supervision and Inspection Technology Research Institute Co., Ltd., Guangdong Special Equipment Inspection and Research Institute (Guangdong Special Equipment Accident Investigation Center), National Pipeline Network
Southwest Pipeline Co., Ltd. of the Group, Branch of the Science and Technology Research Institute of China Oil & Gas Pipeline Network Corporation, Fujian Boiler Co., Ltd.
Pressure Vessel Inspection and Research Institute, China Oil & Gas Pipeline Network Corporation West-East Gas Pipeline Branch, China Petroleum & Chemical Corporation Shanghai Petrochemical Co., Ltd.
Limited Liability Company, Beijing University of Technology, Beijing University of Science and Technology, Shandong Special Equipment Inspection and Research Institute Group Co., Ltd., China National Petroleum Corporation
Changqing Oilfield Branch of China Petroleum Engineering & Construction Corporation Limited, Shaoxing Natural Gas Investment Co., Ltd., Southwest Branch of China Petroleum Engineering & Construction Corporation Limited, Hong Kong and China Gas Company Limited
Investment Co., Ltd., China Oil & Gas Pipeline Network Corporation Central China Branch, China Petroleum & Chemical Corporation Southwest Oil & Gas Branch
The company, China University of Petroleum (Beijing), Guangdong Dapeng LNG Co., Ltd., Shenzhen Gas Group Co., Ltd., and China Petroleum & Chemical Corporation.
Zhenhai Refining & Chemical Branch of China National Petroleum Corporation, Shanghai Natural Gas Pipeline Network Co., Ltd., and Southwest Oil & Gas Field of China National Petroleum Corporation
Gas Transmission Management Department of the Branch Company, Jiangsu Provincial Special Equipment Safety Supervision and Inspection Institute, China National Petroleum Corporation Tarim Oilfield Branch
The company, Wenzhou Special Equipment Inspection and Research Institute (Wenzhou Special Equipment Emergency Response Center), and China Oil & Gas Pipeline Network Group Co., Ltd.
The company's South China branch, China Municipal Engineering North China Design and Research Institute Co., Ltd., Anhui Special Equipment Inspection Institute, and China National Oil and Gas Corporation.
Pipeline Group Co., Ltd. Gansu Branch, China National Petroleum Corporation Xinjiang Oilfield Oil and Gas Storage and Transportation Branch, Zunyi Special Equipment Company
Inspection Institute, Hangzhou Special Equipment Inspection and Research Institute (Hangzhou Special Equipment Emergency Response Center), China National Petroleum Corporation
The Southwest Oil and Gas Field Branch of the Company's Safety, Environmental Protection and Technical Supervision Research Institute, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, and Zhejiang Kexin
Heavy Industry Co., Ltd.
The main drafters of this document are. He Renyang, Sun Ming, Hu Ying, Liu Changzheng, Cui Wei, Hu Yabo, Zuo Yantian, Guo Yanwei, Ran Wenshen, and Yang Dashen.
Zhang Qiang, Chen Zhongbo, Huang Hui, Jia Jianwei, Wang Zhifang, Liu Xiangchun, Wang Xinhua, Wu Mingchang, Liu Zhiyong, Li Yishan, Li Lianming, Zhang Yiyu, Zhang Ping
Xi Dan, Li Fei, Xiao Mao, Wang Jinjiang, Liu Xinling, Shan Ke, Lu Deng, Li Deming, Li Changchun, Chen Jingdong, Chen Xiao, Deng Banghui, Miao Haibo, Si Rong,
Xie Cheng, Chai Fei, Zheng Yifei, Zhang Zhen, Ding Rong, Deng Liyuan, Ni Xi, Huang Ze, Shu Jie, Lu Weizhong, Wu Xinhang.
This document was first published in.2003, revised for the first time in.2014, and this is the second revision.
Inspection of corrosion protection engineering for buried steel pipelines
1 Scope
This document specifies the basic requirements for the quality and corrosion protection effectiveness inspection of onshore buried steel pipeline external corrosion protection projects.
This document applies to the construction period inspection, operation inspection and periodic inspection of onshore buried steel pipeline external corrosion protection projects.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 11032 AC gapless metal oxide surge arresters
GB/T 21447 Standard for External Corrosion Control of Steel Pipelines
GB/T 30582 Risk-based inspection and evaluation of external damage to buried steel pipelines
GB 50423 Code for Design of Oil and Gas Pipeline Crossing Projects
GB/T 50538 Technical Standard for Anti-corrosion and Thermal Insulation Layers of Buried Steel Pipelines
GB/T 51241 Technical Specification for External Corrosion Protection and Repair of Pipelines
SY/T 0029 Technical Specification for Application of Buried Steel Inspection Plates
3.Terms, Definitions and Abbreviations
3.1 Terms and Definitions
The following terms and definitions apply to this document.
3.1.1
Reference electrode
An electrode with a stable and reproducible potential in moist soil is used as a reference when testing the potential values of other electrodes.
3.1.2
Systems analysis and decision-making methods decompose complex problems into multiple levels and factors, determine the relative importance of each factor, and construct...
A hierarchical model is constructed to provide a scientific basis for decision-making, and it is applicable to complex decision-making problems with multiple objectives and multiple criteria.
3.1.3
Offpotential
To test the ground potential without an IR dropper, the potential of the pipeline to the electrolyte (soil) is measured instantaneously after a short delay following a interruption of the loop current.
3.1.4
Corrosion activity in the corrosion active region
Locations on pipelines where external corrosion is prone to occur, frequently occurs, and continues to happen.
3.1.5
The potential difference between the pipeline and its adjacent electrolyte (soil).
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 19285-2026_English be delivered?Answer: Upon your order, we will start to translate GB/T 19285-2026_English as soon as possible, and keep you informed of the progress. The lead time is typically 6 ~ 9 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 19285-2026_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 19285-2026_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 19285-2026?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 19285-2026 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |